src/generic/graphicc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/graphicc.cpp
   3 // Purpose:     cairo device context class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-10-03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2006 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #include "wx/cairo.h"
  19 #include "wx/graphics.h"
  20
  21 #if wxUSE_GRAPHICS_CONTEXT && wxUSE_CAIRO
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/bitmap.h"
  25     #include "wx/icon.h"
  26     #include "wx/dcclient.h"
  27     #include "wx/dcmemory.h"
  28     #include "wx/dcprint.h"
  29 #endif
  30
  31 #include "wx/private/graphics.h"
  32 #include "wx/rawbmp.h"
  33 #include "wx/vector.h"
  34
  35 using namespace std;
  36
  37 //-----------------------------------------------------------------------------
  38 // device context implementation
  39 //
  40 // more and more of the dc functionality should be implemented by calling
  41 // the appropricate wxCairoContext, but we will have to do that step by step
  42 // also coordinate conversions should be moved to native matrix ops
  43 //-----------------------------------------------------------------------------
  44
  45 // we always stock two context states, one at entry, to be able to preserve the
  46 // state we were called with, the other one after changing to HI Graphics orientation
  47 // (this one is used for getting back clippings etc)
  48
  49 //-----------------------------------------------------------------------------
  50 // wxGraphicsPath implementation
  51 //-----------------------------------------------------------------------------
  52
  53 // TODO remove this dependency (gdiplus needs the macros)
  54
  55 #ifndef max
  56 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  57 #endif
  58
  59 #ifndef min
  60 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  61 #endif
  62
  63 #include <cairo.h>
  64 #ifdef __WXMSW__
  65 #include <cairo-win32.h>
  66 #endif
  67
  68 #ifdef __WXGTK__
  69 #include <gtk/gtk.h>
  70 #include "wx/fontutil.h"
  71 #include "wx/gtk/dc.h"
  72 #endif
  73
  74 #ifdef __WXMSW__
  75 #include <cairo-win32.h>
  76 #endif
  77
  78 #ifdef __WXMAC__
  79 #include "wx/osx/private.h"
  80 #include <cairo-quartz.h>
  81 #include <cairo-atsui.h>
  82 #endif
  83
  84 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  85 {
  86 public :
  87     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  88     ~wxCairoPathData();
  89
  90     virtual wxGraphicsObjectRefData *Clone() const;
  91
  92     //
  93     // These are the path primitives from which everything else can be constructed
  94     //
  95
  96     // begins a new subpath at (x,y)
  97     virtual void MoveToPoint( wxDouble x, wxDouble y );
  98
  99     // adds a straight line from the current point to (x,y)
 100     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 101
 102     // adds a cubic Bezier curve from the current point, using two control points and an end point
 103     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 104
 105
 106     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 107     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 108
 109     // gets the last point of the current path, (0,0) if not yet set
 110     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 111
 112     // adds another path
 113     virtual void AddPath( const wxGraphicsPathData* path );
 114
 115     // closes the current sub-path
 116     virtual void CloseSubpath();
 117
 118     //
 119     // These are convenience functions which - if not available natively will be assembled
 120     // using the primitives from above
 121     //
 122
 123     /*
 124
 125     // appends a rectangle as a new closed subpath
 126     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 127     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 128     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 129
 130     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 131     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 132     */
 133
 134     // returns the native path
 135     virtual void * GetNativePath() const ;
 136
 137     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 138     virtual void UnGetNativePath(void *p) const;
 139
 140     // transforms each point of this path by the matrix
 141     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 142
 143     // gets the bounding box enclosing all points (possibly including control points)
 144     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 145
 146     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 147
 148 private :
 149     cairo_t* m_pathContext;
 150 };
 151
 152 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 153 {
 154 public :
 155     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 156     virtual ~wxCairoMatrixData() ;
 157
 158     virtual wxGraphicsObjectRefData *Clone() const ;
 159
 160     // concatenates the matrix
 161     virtual void Concat( const wxGraphicsMatrixData *t );
 162
 163     // sets the matrix to the respective values
 164     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 165         wxDouble tx=0.0, wxDouble ty=0.0);
 166
 167     // gets the component valuess of the matrix
 168     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 169                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 170
 171     // makes this the inverse matrix
 172     virtual void Invert();
 173
 174     // returns true if the elements of the transformation matrix are equal ?
 175     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 176
 177     // return true if this is the identity matrix
 178     virtual bool IsIdentity() const;
 179
 180     //
 181     // transformation
 182     //
 183
 184     // add the translation to this matrix
 185     virtual void Translate( wxDouble dx , wxDouble dy );
 186
 187     // add the scale to this matrix
 188     virtual void Scale( wxDouble xScale , wxDouble yScale );
 189
 190     // add the rotation to this matrix (radians)
 191     virtual void Rotate( wxDouble angle );
 192
 193     //
 194     // apply the transforms
 195     //
 196
 197     // applies that matrix to the point
 198     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 199
 200     // applies the matrix except for translations
 201     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 202
 203     // returns the native representation
 204     virtual void * GetNativeMatrix() const;
 205 private:
 206     cairo_matrix_t m_matrix ;
 207 } ;
 208
 209 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 210 {
 211 public:
 212     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 213     ~wxCairoPenData();
 214
 215     void Init();
 216
 217     virtual void Apply( wxGraphicsContext* context );
 218     virtual wxDouble GetWidth() { return m_width; }
 219
 220 private :
 221     double m_width;
 222
 223     double m_red;
 224     double m_green;
 225     double m_blue;
 226     double m_alpha;
 227
 228     cairo_line_cap_t m_cap;
 229     cairo_line_join_t m_join;
 230
 231     int m_count;
 232     const double *m_lengths;
 233     double *m_userLengths;
 234
 235     wxPen m_pen;
 236
 237     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 238 };
 239
 240 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 241 {
 242 public:
 243     wxCairoBrushData( wxGraphicsRenderer* renderer );
 244     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 245     ~wxCairoBrushData ();
 246
 247     virtual void Apply( wxGraphicsContext* context );
 248     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 249         const wxColour&c1, const wxColour&c2 );
 250     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 251         const wxColour &oColor, const wxColour &cColor );
 252
 253 protected:
 254     virtual void Init();
 255
 256 private :
 257     double m_red;
 258     double m_green;
 259     double m_blue;
 260     double m_alpha;
 261
 262     cairo_pattern_t* m_brushPattern;
 263 };
 264
 265 class wxCairoFontData : public wxGraphicsObjectRefData
 266 {
 267 public:
 268     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 269     ~wxCairoFontData();
 270
 271     virtual void Apply( wxGraphicsContext* context );
 272 #ifdef __WXGTK__
 273     const PangoFontDescription* GetFont() const { return m_font; }
 274     bool GetUnderlined() const { return m_underlined; }
 275 #endif
 276 private :
 277     double m_size;
 278     bool m_underlined;
 279     double m_red;
 280     double m_green;
 281     double m_blue;
 282     double m_alpha;
 283 #ifdef __WXMAC__
 284     cairo_font_face_t *m_font;
 285 #elif defined(__WXGTK__)
 286     PangoFontDescription* m_font;
 287 #else
 288     wxCharBuffer m_fontName;
 289     cairo_font_slant_t m_slant;
 290     cairo_font_weight_t m_weight;
 291 #endif
 292 #ifdef __WXMSW__
 293     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 294 #endif
 295 };
 296
 297 class wxCairoBitmapData : public wxGraphicsObjectRefData
 298 {
 299 public:
 300     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 301     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 302     ~wxCairoBitmapData();
 303
 304     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 305     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 306     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 307 private :
 308     cairo_surface_t* m_surface;
 309     cairo_pattern_t* m_pattern;
 310     int m_width;
 311     int m_height;
 312     unsigned char* m_buffer;
 313 };
 314
 315 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 316 {
 317 public:
 318     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 319     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 320     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 321 #ifdef __WXGTK__
 322     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 323 #endif
 324     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 325     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 326     wxCairoContext();
 327     virtual ~wxCairoContext();
 328
 329     virtual bool ShouldOffset() const
 330     {
 331         int penwidth = 0 ;
 332         if ( !m_pen.IsNull() )
 333         {
 334             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 335             if ( penwidth == 0 )
 336                 penwidth = 1;
 337         }
 338         return ( penwidth % 2 ) == 1;
 339     }
 340
 341     virtual void Clip( const wxRegion &region );
 342 #ifdef __WXMSW__
 343     cairo_surface_t* m_mswSurface;
 344 #endif
 345
 346     // clips drawings to the rect
 347     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 348
 349     // resets the clipping to original extent
 350     virtual void ResetClip();
 351
 352     virtual void * GetNativeContext();
 353
 354     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 355
 356     virtual bool SetCompositionMode(wxCompositionMode op);
 357
 358     virtual void BeginLayer(wxDouble opacity);
 359
 360     virtual void EndLayer();
 361
 362     virtual void StrokePath( const wxGraphicsPath& p );
 363     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 364
 365     virtual void Translate( wxDouble dx , wxDouble dy );
 366     virtual void Scale( wxDouble xScale , wxDouble yScale );
 367     virtual void Rotate( wxDouble angle );
 368
 369     // concatenates this transform with the current transform of this context
 370     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 371
 372     // sets the transform of this context
 373     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 374
 375     // gets the matrix of this context
 376     virtual wxGraphicsMatrix GetTransform() const;
 377
 378     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 379     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 380     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 381     virtual void PushState();
 382     virtual void PopState();
 383
 384     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 385                                 wxDouble *descent, wxDouble *externalLeading ) const;
 386     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 387
 388 protected:
 389     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 390
 391 private:
 392     void Init(cairo_t *context);
 393
 394     cairo_t* m_context;
 395
 396     wxVector<float> m_layerOpacities;
 397
 398     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 399 };
 400
 401 //-----------------------------------------------------------------------------
 402 // wxCairoPenData implementation
 403 //-----------------------------------------------------------------------------
 404
 405 wxCairoPenData::~wxCairoPenData()
 406 {
 407     delete[] m_userLengths;
 408 }
 409
 410 void wxCairoPenData::Init()
 411 {
 412     m_lengths = NULL;
 413     m_userLengths = NULL;
 414     m_width = 0;
 415     m_count = 0;
 416 }
 417
 418 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 419 : wxGraphicsObjectRefData(renderer)
 420 {
 421     Init();
 422     m_pen = pen;
 423     m_width = m_pen.GetWidth();
 424     if (m_width <= 0.0)
 425         m_width = 0.1;
 426
 427     m_red = m_pen.GetColour().Red()/255.0;
 428     m_green = m_pen.GetColour().Green()/255.0;
 429     m_blue = m_pen.GetColour().Blue()/255.0;
 430     m_alpha = m_pen.GetColour().Alpha()/255.0;
 431
 432     switch ( m_pen.GetCap() )
 433     {
 434     case wxCAP_ROUND :
 435         m_cap = CAIRO_LINE_CAP_ROUND;
 436         break;
 437
 438     case wxCAP_PROJECTING :
 439         m_cap = CAIRO_LINE_CAP_SQUARE;
 440         break;
 441
 442     case wxCAP_BUTT :
 443         m_cap = CAIRO_LINE_CAP_BUTT;
 444         break;
 445
 446     default :
 447         m_cap = CAIRO_LINE_CAP_BUTT;
 448         break;
 449     }
 450
 451     switch ( m_pen.GetJoin() )
 452     {
 453     case wxJOIN_BEVEL :
 454         m_join = CAIRO_LINE_JOIN_BEVEL;
 455         break;
 456
 457     case wxJOIN_MITER :
 458         m_join = CAIRO_LINE_JOIN_MITER;
 459         break;
 460
 461     case wxJOIN_ROUND :
 462         m_join = CAIRO_LINE_JOIN_ROUND;
 463         break;
 464
 465     default :
 466         m_join = CAIRO_LINE_JOIN_MITER;
 467         break;
 468     }
 469
 470     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 471     const double dotted[] =
 472     {
 473         dashUnit , dashUnit + 2.0
 474     };
 475     static const double short_dashed[] =
 476     {
 477         9.0 , 6.0
 478     };
 479     static const double dashed[] =
 480     {
 481         19.0 , 9.0
 482     };
 483     static const double dotted_dashed[] =
 484     {
 485         9.0 , 6.0 , 3.0 , 3.0
 486     };
 487
 488     switch ( m_pen.GetStyle() )
 489     {
 490     case wxPENSTYLE_SOLID :
 491         break;
 492
 493     case wxPENSTYLE_DOT :
 494         m_count = WXSIZEOF(dotted);
 495         m_userLengths = new double[ m_count ] ;
 496         memcpy( m_userLengths, dotted, sizeof(dotted) );
 497         m_lengths = m_userLengths;
 498         break;
 499
 500     case wxPENSTYLE_LONG_DASH :
 501         m_lengths = dashed ;
 502         m_count = WXSIZEOF(dashed);
 503         break;
 504
 505     case wxPENSTYLE_SHORT_DASH :
 506         m_lengths = short_dashed ;
 507         m_count = WXSIZEOF(short_dashed);
 508         break;
 509
 510     case wxPENSTYLE_DOT_DASH :
 511         m_lengths = dotted_dashed ;
 512         m_count = WXSIZEOF(dotted_dashed);
 513         break;
 514
 515     case wxPENSTYLE_USER_DASH :
 516         {
 517             wxDash *wxdashes ;
 518             m_count = m_pen.GetDashes( &wxdashes ) ;
 519             if ((wxdashes != NULL) && (m_count > 0))
 520             {
 521                 m_userLengths = new double[m_count] ;
 522                 for ( int i = 0 ; i < m_count ; ++i )
 523                 {
 524                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 525
 526                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 527                         m_userLengths[i] = dashUnit + 2.0 ;
 528                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 529                         m_userLengths[i] = dashUnit ;
 530                 }
 531             }
 532             m_lengths = m_userLengths ;
 533         }
 534         break;
 535     case wxPENSTYLE_STIPPLE :
 536         {
 537             /*
 538             wxBitmap* bmp = pen.GetStipple();
 539             if ( bmp && bmp->Ok() )
 540             {
 541             wxDELETE( m_penImage );
 542             wxDELETE( m_penBrush );
 543             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 544             m_penBrush = new TextureBrush(m_penImage);
 545             m_pen->SetBrush( m_penBrush );
 546             }
 547             */
 548         }
 549         break;
 550     default :
 551         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 552             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 553         {
 554             /*
 555             wxDELETE( m_penBrush );
 556             HatchStyle style = HatchStyleHorizontal;
 557             switch( pen.GetStyle() )
 558             {
 559             case wxPENSTYLE_BDIAGONAL_HATCH :
 560             style = HatchStyleBackwardDiagonal;
 561             break ;
 562             case wxPENSTYLE_CROSSDIAG_HATCH :
 563             style = HatchStyleDiagonalCross;
 564             break ;
 565             case wxPENSTYLE_FDIAGONAL_HATCH :
 566             style = HatchStyleForwardDiagonal;
 567             break ;
 568             case wxPENSTYLE_CROSS_HATCH :
 569             style = HatchStyleCross;
 570             break ;
 571             case wxPENSTYLE_HORIZONTAL_HATCH :
 572             style = HatchStyleHorizontal;
 573             break ;
 574             case wxPENSTYLE_VERTICAL_HATCH :
 575             style = HatchStyleVertical;
 576             break ;
 577
 578             }
 579             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 580             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 581             m_pen->SetBrush( m_penBrush )
 582             */
 583         }
 584         break;
 585     }
 586 }
 587
 588 void wxCairoPenData::Apply( wxGraphicsContext* context )
 589 {
 590     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 591     cairo_set_line_width(ctext,m_width);
 592     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 593     cairo_set_line_cap(ctext,m_cap);
 594     cairo_set_line_join(ctext,m_join);
 595     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 596 }
 597
 598 //-----------------------------------------------------------------------------
 599 // wxCairoBrushData implementation
 600 //-----------------------------------------------------------------------------
 601
 602 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 603   : wxGraphicsObjectRefData( renderer )
 604 {
 605     Init();
 606 }
 607
 608 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 609   : wxGraphicsObjectRefData(renderer)
 610 {
 611     Init();
 612
 613     m_red = brush.GetColour().Red()/255.0;
 614     m_green = brush.GetColour().Green()/255.0;
 615     m_blue = brush.GetColour().Blue()/255.0;
 616     m_alpha = brush.GetColour().Alpha()/255.0;
 617     /*
 618     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 619     {
 620     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 621     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 622     }
 623     else if ( brush.IsHatch() )
 624     {
 625     HatchStyle style = HatchStyleHorizontal;
 626     switch( brush.GetStyle() )
 627     {
 628     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 629     style = HatchStyleBackwardDiagonal;
 630     break ;
 631     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 632     style = HatchStyleDiagonalCross;
 633     break ;
 634     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 635     style = HatchStyleForwardDiagonal;
 636     break ;
 637     case wxBRUSHSTYLE_CROSS_HATCH :
 638     style = HatchStyleCross;
 639     break ;
 640     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 641     style = HatchStyleHorizontal;
 642     break ;
 643     case wxBRUSHSTYLE_VERTICAL_HATCH :
 644     style = HatchStyleVertical;
 645     break ;
 646
 647     }
 648     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 649     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 650     }
 651     else
 652     {
 653     wxBitmap* bmp = brush.GetStipple();
 654     if ( bmp && bmp->Ok() )
 655     {
 656     wxDELETE( m_brushImage );
 657     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 658     m_brush = new TextureBrush(m_brushImage);
 659     }
 660     }
 661     */
 662 }
 663
 664 wxCairoBrushData::~wxCairoBrushData ()
 665 {
 666     if (m_brushPattern)
 667         cairo_pattern_destroy(m_brushPattern);
 668 }
 669
 670 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 671 {
 672     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 673     if ( m_brushPattern )
 674     {
 675         cairo_set_source(ctext,m_brushPattern);
 676     }
 677     else
 678     {
 679         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 680     }
 681 }
 682
 683 void wxCairoBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 684         const wxColour&c1, const wxColour&c2 )
 685 {
 686     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 687     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
 688         c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
 689     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
 690         c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
 691     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 692 }
 693
 694 void wxCairoBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 695         const wxColour &oColor, const wxColour &cColor )
 696 {
 697     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 698     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
 699         oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
 700     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
 701         cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
 702     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 703 }
 704
 705 void wxCairoBrushData::Init()
 706 {
 707     m_brushPattern = NULL;
 708 }
 709
 710 //-----------------------------------------------------------------------------
 711 // wxCairoFontData implementation
 712 //-----------------------------------------------------------------------------
 713
 714 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 715                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 716 {
 717     m_red = col.Red()/255.0;
 718     m_green = col.Green()/255.0;
 719     m_blue = col.Blue()/255.0;
 720     m_alpha = col.Alpha()/255.0;
 721     m_size = font.GetPointSize();
 722     m_underlined = font.GetUnderlined();
 723
 724 #ifdef __WXMAC__
 725     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 726 #elif defined(__WXGTK__)
 727     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 728 #else
 729     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 730     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 731     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 732 #endif
 733 }
 734
 735 wxCairoFontData::~wxCairoFontData()
 736 {
 737 #ifdef __WXMAC__
 738     cairo_font_face_destroy( m_font );
 739 #elif defined(__WXGTK__)
 740     pango_font_description_free( m_font );
 741 #else
 742 #endif
 743 }
 744
 745 void wxCairoFontData::Apply( wxGraphicsContext* context )
 746 {
 747     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 748     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 749 #ifdef __WXGTK__
 750     // the rest is done using Pango layouts
 751 #elif defined(__WXMAC__)
 752     cairo_set_font_face(ctext, m_font);
 753     cairo_set_font_size(ctext, m_size );
 754 #else
 755     cairo_select_font_face(ctext, m_fontName, m_slant, m_weights );
 756     cairo_set_font_size(ctext, m_size );
 757 #endif
 758 }
 759
 760 //-----------------------------------------------------------------------------
 761 // wxCairoPathData implementation
 762 //-----------------------------------------------------------------------------
 763
 764 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 765     : wxGraphicsPathData(renderer)
 766 {
 767     if (pathcontext)
 768     {
 769         m_pathContext = pathcontext;
 770     }
 771     else
 772     {
 773         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 774         m_pathContext = cairo_create(surface);
 775         cairo_surface_destroy (surface);
 776     }
 777 }
 778
 779 wxCairoPathData::~wxCairoPathData()
 780 {
 781     cairo_destroy(m_pathContext);
 782 }
 783
 784 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 785 {
 786     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 787     cairo_t* pathcontext = cairo_create(surface);
 788     cairo_surface_destroy (surface);
 789
 790     cairo_path_t* path = cairo_copy_path(m_pathContext);
 791     cairo_append_path(pathcontext, path);
 792     cairo_path_destroy(path);
 793     return new wxCairoPathData( GetRenderer() ,pathcontext);
 794 }
 795
 796
 797 void* wxCairoPathData::GetNativePath() const
 798 {
 799     return cairo_copy_path(m_pathContext) ;
 800 }
 801
 802 void wxCairoPathData::UnGetNativePath(void *p) const
 803 {
 804     cairo_path_destroy((cairo_path_t*)p);
 805 }
 806
 807 //
 808 // The Primitives
 809 //
 810
 811 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 812 {
 813     cairo_move_to(m_pathContext,x,y);
 814 }
 815
 816 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 817 {
 818     cairo_line_to(m_pathContext,x,y);
 819 }
 820
 821 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 822 {
 823     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 824     cairo_append_path(m_pathContext, p);
 825     UnGetNativePath(p);
 826 }
 827
 828 void wxCairoPathData::CloseSubpath()
 829 {
 830     cairo_close_path(m_pathContext);
 831 }
 832
 833 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 834 {
 835     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 836 }
 837
 838 // gets the last point of the current path, (0,0) if not yet set
 839 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 840 {
 841     double dx,dy;
 842     cairo_get_current_point(m_pathContext,&dx,&dy);
 843     if (x)
 844         *x = dx;
 845     if (y)
 846         *y = dy;
 847 }
 848
 849 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 850 {
 851     // as clockwise means positive in our system (y pointing downwards)
 852     // TODO make this interpretation dependent of the
 853     // real device trans
 854     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 855         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 856     else
 857         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 858 }
 859
 860 // transforms each point of this path by the matrix
 861 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 862 {
 863     // as we don't have a true path object, we have to apply the inverse
 864     // matrix to the context
 865     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 866     cairo_matrix_invert( &m );
 867     cairo_transform(m_pathContext,&m);
 868 }
 869
 870 // gets the bounding box enclosing all points (possibly including control points)
 871 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 872 {
 873     double x1,y1,x2,y2;
 874
 875     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 876     if ( x2 < x1 )
 877     {
 878         *x = x2;
 879         *w = x1-x2;
 880     }
 881     else
 882     {
 883         *x = x1;
 884         *w = x2-x1;
 885     }
 886
 887     if( y2 < y1 )
 888     {
 889         *y = y2;
 890         *h = y1-y2;
 891     }
 892     else
 893     {
 894         *y = y1;
 895         *h = y2-y1;
 896     }
 897 }
 898
 899 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode WXUNUSED(fillStyle) ) const
 900 {
 901     return cairo_in_stroke( m_pathContext, x, y) != 0;
 902 }
 903
 904 //-----------------------------------------------------------------------------
 905 // wxCairoMatrixData implementation
 906 //-----------------------------------------------------------------------------
 907
 908 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 909     : wxGraphicsMatrixData(renderer)
 910 {
 911     if ( matrix )
 912         m_matrix = *matrix;
 913 }
 914
 915 wxCairoMatrixData::~wxCairoMatrixData()
 916 {
 917     // nothing to do
 918 }
 919
 920 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 921 {
 922     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 923 }
 924
 925 // concatenates the matrix
 926 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 927 {
 928     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 929 }
 930
 931 // sets the matrix to the respective values
 932 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 933                         wxDouble tx, wxDouble ty)
 934 {
 935     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 936 }
 937
 938 // gets the component valuess of the matrix
 939 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 940                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 941 {
 942     if (a)  *a = m_matrix.xx;
 943     if (b)  *b = m_matrix.yx;
 944     if (c)  *c = m_matrix.xy;
 945     if (d)  *d = m_matrix.yy;
 946     if (tx) *tx= m_matrix.x0;
 947     if (ty) *ty= m_matrix.y0;
 948 }
 949
 950 // makes this the inverse matrix
 951 void wxCairoMatrixData::Invert()
 952 {
 953     cairo_matrix_invert( &m_matrix );
 954 }
 955
 956 // returns true if the elements of the transformation matrix are equal ?
 957 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 958 {
 959     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
 960     return (
 961         m_matrix.xx == tm->xx &&
 962         m_matrix.yx == tm->yx &&
 963         m_matrix.xy == tm->xy &&
 964         m_matrix.yy == tm->yy &&
 965         m_matrix.x0 == tm->x0 &&
 966         m_matrix.y0 == tm->y0 ) ;
 967 }
 968
 969 // return true if this is the identity matrix
 970 bool wxCairoMatrixData::IsIdentity() const
 971 {
 972     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
 973         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
 974 }
 975
 976 //
 977 // transformation
 978 //
 979
 980 // add the translation to this matrix
 981 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
 982 {
 983     cairo_matrix_translate( &m_matrix, dx, dy) ;
 984 }
 985
 986 // add the scale to this matrix
 987 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 988 {
 989     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
 990 }
 991
 992 // add the rotation to this matrix (radians)
 993 void wxCairoMatrixData::Rotate( wxDouble angle )
 994 {
 995     cairo_matrix_rotate( &m_matrix, angle) ;
 996 }
 997
 998 //
 999 // apply the transforms
1000 //
1001
1002 // applies that matrix to the point
1003 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1004 {
1005     double lx = *x, ly = *y ;
1006     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1007     *x = lx;
1008     *y = ly;
1009 }
1010
1011 // applies the matrix except for translations
1012 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1013 {
1014     double lx = *dx, ly = *dy ;
1015     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1016     *dx = lx;
1017     *dy = ly;
1018 }
1019
1020 // returns the native representation
1021 void * wxCairoMatrixData::GetNativeMatrix() const
1022 {
1023     return (void*) &m_matrix;
1024 }
1025
1026 // wxCairoBitmap implementation
1027 //-----------------------------------------------------------------------------
1028
1029 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1030     wxGraphicsObjectRefData( renderer )
1031 {
1032     m_surface = bitmap;
1033     m_pattern = cairo_pattern_create_for_surface(m_surface);
1034 }
1035
1036 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1037 {
1038     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1039
1040     int bw = bmp.GetWidth();
1041     int bh = bmp.GetHeight();
1042     wxBitmap bmpSource = bmp;  // we need a non-const instance
1043     m_buffer = new unsigned char[bw*bh*4];
1044     wxUint32* data = (wxUint32*)m_buffer;
1045
1046     // Create a surface object and copy the bitmap pixel data to it.  if the
1047     // image has alpha (or a mask represented as alpha) then we'll use a
1048     // different format and iterator than if it doesn't...
1049     if (bmpSource.HasAlpha() || bmpSource.GetMask())
1050     {
1051         m_surface = cairo_image_surface_create_for_data(
1052             m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
1053         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1054         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1055
1056         wxAlphaPixelData::Iterator p(pixData);
1057         for (int y=0; y<bh; y++)
1058         {
1059             wxAlphaPixelData::Iterator rowStart = p;
1060             for (int x=0; x<bw; x++)
1061             {
1062                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1063                 // with alpha in the upper 8 bits, then red, then green, then
1064                 // blue. The 32-bit quantities are stored native-endian.
1065                 // Pre-multiplied alpha is used.
1066                 unsigned char alpha = p.Alpha();
1067                 if (alpha == 0)
1068                     *data = 0;
1069                 else
1070                     *data = ( alpha                      << 24
1071                               | (p.Red() * alpha/255)    << 16
1072                               | (p.Green() * alpha/255)  <<  8
1073                               | (p.Blue() * alpha/255) );
1074                 ++data;
1075                 ++p;
1076             }
1077             p = rowStart;
1078             p.OffsetY(pixData, 1);
1079         }
1080     }
1081     else  // no alpha
1082     {
1083         m_surface = cairo_image_surface_create_for_data(
1084             m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
1085         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1086         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1087
1088         wxNativePixelData::Iterator p(pixData);
1089         for (int y=0; y<bh; y++)
1090         {
1091             wxNativePixelData::Iterator rowStart = p;
1092             for (int x=0; x<bw; x++)
1093             {
1094                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1095                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1096                 // the remaining 24 bits in that order.  The 32-bit quantities
1097                 // are stored native-endian.
1098                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1099                 ++data;
1100                 ++p;
1101             }
1102             p = rowStart;
1103             p.OffsetY(pixData, 1);
1104         }
1105     }
1106     m_pattern = cairo_pattern_create_for_surface(m_surface);
1107 }
1108
1109 wxCairoBitmapData::~wxCairoBitmapData()
1110 {
1111     if (m_pattern)
1112         cairo_pattern_destroy(m_pattern);
1113
1114     if (m_surface)
1115         cairo_surface_destroy(m_surface);
1116
1117     delete [] m_buffer;
1118 }
1119
1120
1121
1122 //-----------------------------------------------------------------------------
1123 // wxCairoContext implementation
1124 //-----------------------------------------------------------------------------
1125
1126 class wxCairoOffsetHelper
1127 {
1128 public :
1129     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1130     {
1131         m_ctx = ctx;
1132         m_offset = offset;
1133         if ( m_offset )
1134              cairo_translate( m_ctx, 0.5, 0.5 );
1135     }
1136     ~wxCairoOffsetHelper( )
1137     {
1138         if ( m_offset )
1139             cairo_translate( m_ctx, -0.5, -0.5 );
1140     }
1141 public :
1142     cairo_t* m_ctx;
1143     bool m_offset;
1144 } ;
1145
1146 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1147 : wxGraphicsContext(renderer)
1148 {
1149 #ifdef __WXGTK20__
1150     const wxDCImpl *impl = dc.GetImpl();
1151     Init( (cairo_t*) impl->GetCairoContext() );
1152
1153     wxPoint org = dc.GetDeviceOrigin();
1154     cairo_translate( m_context, org.x, org.y );
1155
1156     double sx,sy;
1157     dc.GetUserScale( &sx, &sy );
1158     cairo_scale( m_context, sx, sy );
1159
1160     org = dc.GetLogicalOrigin();
1161     cairo_translate( m_context, -org.x, -org.y );
1162 #endif
1163 }
1164
1165 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1166 : wxGraphicsContext(renderer)
1167 {
1168 #ifdef __WXGTK20__
1169     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1170     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1171
1172 #if 0
1173     wxGraphicsMatrix matrix = CreateMatrix();
1174
1175     wxPoint org = dc.GetDeviceOrigin();
1176     matrix.Translate( org.x, org.y );
1177
1178     org = dc.GetLogicalOrigin();
1179     matrix.Translate( -org.x, -org.y );
1180
1181     double sx,sy;
1182     dc.GetUserScale( &sx, &sy );
1183     matrix.Scale( sx, sy );
1184
1185     ConcatTransform( matrix );
1186 #endif
1187 #endif
1188
1189 #ifdef __WXMAC__
1190     int width, height;
1191     dc.GetSize( &width, &height );
1192     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1193     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1194     Init( cairo_create( surface ) );
1195     cairo_surface_destroy( surface );
1196 #endif
1197 }
1198
1199 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1200 : wxGraphicsContext(renderer)
1201 {
1202 #ifdef __WXGTK20__
1203     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1204     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1205
1206 #if 0
1207     wxGraphicsMatrix matrix = CreateMatrix();
1208
1209     wxPoint org = dc.GetDeviceOrigin();
1210     matrix.Translate( org.x, org.y );
1211
1212     org = dc.GetLogicalOrigin();
1213     matrix.Translate( -org.x, -org.y );
1214
1215     double sx,sy;
1216     dc.GetUserScale( &sx, &sy );
1217     matrix.Scale( sx, sy );
1218
1219     ConcatTransform( matrix );
1220 #endif
1221 #endif
1222
1223 #ifdef __WXMAC__
1224     int width, height;
1225     dc.GetSize( &width, &height );
1226     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1227     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1228     Init( cairo_create( surface ) );
1229     cairo_surface_destroy( surface );
1230 #endif
1231 }
1232
1233 #ifdef __WXGTK20__
1234 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1235 : wxGraphicsContext(renderer)
1236 {
1237     Init( gdk_cairo_create( drawable ) );
1238 }
1239 #endif
1240
1241 #ifdef __WXMSW__
1242 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1243 : wxGraphicsContext(renderer)
1244 {
1245     m_mswSurface = cairo_win32_surface_create(handle);
1246     m_context = cairo_create(m_mswSurface);
1247     PushState();
1248     PushState();
1249 }
1250 #endif
1251
1252
1253 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1254 : wxGraphicsContext(renderer)
1255 {
1256     Init( context );
1257 }
1258
1259 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1260 : wxGraphicsContext(renderer)
1261 {
1262 #ifdef __WXGTK__
1263     // something along these lines (copied from dcclient)
1264
1265     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1266     // code should still be able to create wxClientDCs for them, so we will
1267     // use the parent window here then.
1268     if (window->m_wxwindow == NULL)
1269     {
1270         window = window->GetParent();
1271     }
1272
1273     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1274
1275     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1276 #endif
1277 }
1278
1279 wxCairoContext::~wxCairoContext()
1280 {
1281     if ( m_context )
1282     {
1283         PopState();
1284 #ifdef __WXMSW__
1285     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1286     m_context = cairo_create(m_mswSurface);
1287 #endif
1288         PopState();
1289         cairo_destroy(m_context);
1290     }
1291 #ifdef __WXMSW__
1292     if ( m_mswSurface )
1293         cairo_surface_destroy(m_mswSurface);
1294 #endif
1295 }
1296
1297 void wxCairoContext::Init(cairo_t *context)
1298 {
1299     m_context = context ;
1300     PushState();
1301     PushState();
1302 }
1303
1304
1305 void wxCairoContext::Clip( const wxRegion& region )
1306 {
1307     // Create a path with all the rectangles in the region
1308     wxGraphicsPath path = GetRenderer()->CreatePath();
1309     wxRegionIterator ri(region);
1310     while (ri)
1311     {
1312         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1313         ++ri;
1314     }
1315
1316     // Put it in the context
1317     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1318     cairo_append_path(m_context, cp);
1319
1320     // clip to that path
1321     cairo_clip(m_context);
1322     path.UnGetNativePath(cp);
1323 }
1324
1325 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1326 {
1327     // Create a path with this rectangle
1328     wxGraphicsPath path = GetRenderer()->CreatePath();
1329     path.AddRectangle(x,y,w,h);
1330
1331     // Put it in the context
1332     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1333     cairo_append_path(m_context, cp);
1334
1335     // clip to that path
1336     cairo_clip(m_context);
1337     path.UnGetNativePath(cp);
1338 }
1339
1340 void wxCairoContext::ResetClip()
1341 {
1342     cairo_reset_clip(m_context);
1343 }
1344
1345
1346 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1347 {
1348     if ( !m_pen.IsNull() )
1349     {
1350         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1351         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1352         cairo_append_path(m_context,cp);
1353         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1354         cairo_stroke(m_context);
1355         path.UnGetNativePath(cp);
1356     }
1357 }
1358
1359 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1360 {
1361     if ( !m_brush.IsNull() )
1362     {
1363         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1364         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1365         cairo_append_path(m_context,cp);
1366         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1367         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1368         cairo_fill(m_context);
1369         path.UnGetNativePath(cp);
1370     }
1371 }
1372
1373 void wxCairoContext::Rotate( wxDouble angle )
1374 {
1375     cairo_rotate(m_context,angle);
1376 }
1377
1378 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1379 {
1380     cairo_translate(m_context,dx,dy);
1381 }
1382
1383 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1384 {
1385     cairo_scale(m_context,xScale,yScale);
1386 }
1387
1388 // concatenates this transform with the current transform of this context
1389 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1390 {
1391     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1392 }
1393
1394 // sets the transform of this context
1395 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1396 {
1397     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1398 }
1399
1400 // gets the matrix of this context
1401 wxGraphicsMatrix wxCairoContext::GetTransform() const
1402 {
1403     wxGraphicsMatrix matrix = CreateMatrix();
1404     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1405     return matrix;
1406 }
1407
1408
1409
1410 void wxCairoContext::PushState()
1411 {
1412     cairo_save(m_context);
1413 }
1414
1415 void wxCairoContext::PopState()
1416 {
1417     cairo_restore(m_context);
1418 }
1419
1420 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1421 {
1422     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1423     DrawBitmap(bitmap, x, y, w, h);
1424
1425 }
1426
1427 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1428 {
1429     PushState();
1430
1431     // In case we're scaling the image by using a width and height different
1432     // than the bitmap's size create a pattern transformation on the surface and
1433     // draw the transformed pattern.
1434     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1435     cairo_pattern_t* pattern = data->GetCairoPattern();
1436     wxSize size = data->GetSize();
1437
1438     wxDouble scaleX = w / size.GetWidth();
1439     wxDouble scaleY = h / size.GetHeight();
1440     cairo_scale(m_context, scaleX, scaleY);
1441
1442     // prepare to draw the image
1443     cairo_translate(m_context, x, y);
1444     cairo_set_source(m_context, pattern);
1445     // use the original size here since the context is scaled already...
1446     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1447     // fill the rectangle using the pattern
1448     cairo_fill(m_context);
1449
1450     PopState();
1451 }
1452
1453 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1454 {
1455     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1456     // start using the Cairo backend on other platforms then we may need to
1457     // fiddle with this...
1458     DrawBitmap(icon, x, y, w, h);
1459 }
1460
1461
1462 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1463 {
1464     wxCHECK_RET( !m_font.IsNull(),
1465                  wxT("wxCairoContext::DrawText - no valid font set") );
1466
1467     if ( str.empty())
1468         return;
1469
1470     const wxCharBuffer data = str.utf8_str();
1471     if ( !data )
1472         return;
1473
1474     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1475
1476 #ifdef __WXGTK__
1477     size_t datalen = strlen(data);
1478
1479     PangoLayout *layout = pango_cairo_create_layout (m_context);
1480     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1481     pango_layout_set_font_description( layout, font_data->GetFont());
1482     pango_layout_set_text(layout, data, datalen);
1483
1484     if (font_data->GetUnderlined())
1485     {
1486         PangoAttrList *attrs = pango_attr_list_new();
1487         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1488         pango_attr_list_insert(attrs, attr);
1489         pango_layout_set_attributes(layout, attrs);
1490         pango_attr_list_unref(attrs);
1491     }
1492
1493     cairo_move_to(m_context, x, y);
1494     pango_cairo_show_layout (m_context, layout);
1495
1496     g_object_unref (layout);
1497 #else
1498     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1499     // the position we move to by the ascent.
1500     cairo_font_extents_t fe;
1501     cairo_font_extents(m_context, &fe);
1502     cairo_move_to(m_context, x, y+fe.ascent);
1503
1504     cairo_show_text(m_context, data);
1505 #endif
1506 }
1507
1508 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1509                                     wxDouble *descent, wxDouble *externalLeading ) const
1510 {
1511     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1512
1513     if ( width )
1514         *width = 0;
1515     if ( height )
1516         *height = 0;
1517     if ( descent )
1518         *descent = 0;
1519     if ( externalLeading )
1520         *externalLeading = 0;
1521
1522     if ( str.empty())
1523         return;
1524
1525 #ifdef __WXGTK__
1526     int w, h;
1527
1528     PangoLayout *layout = pango_cairo_create_layout (m_context);
1529     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1530     const wxCharBuffer data = str.utf8_str();
1531     if ( !data )
1532     {
1533         return;
1534     }
1535     pango_layout_set_text( layout, data, strlen(data) );
1536     pango_layout_get_pixel_size (layout, &w, &h);
1537     if ( width )
1538         *width = w;
1539     if ( height )
1540         *height = h;
1541     if (descent)
1542     {
1543         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1544         int baseline = pango_layout_iter_get_baseline(iter);
1545         pango_layout_iter_free(iter);
1546         *descent = h - PANGO_PIXELS(baseline);
1547     }
1548     g_object_unref (layout);
1549 #else
1550     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1551
1552     if (width)
1553     {
1554         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1555         cairo_text_extents_t te;
1556         cairo_text_extents(m_context, buf, &te);
1557         *width = te.width;
1558     }
1559
1560     if (height || descent || externalLeading)
1561     {
1562         cairo_font_extents_t fe;
1563         cairo_font_extents(m_context, &fe);
1564
1565         // some backends have negative descents
1566
1567         if ( fe.descent < 0 )
1568             fe.descent = -fe.descent;
1569
1570         if ( fe.height < (fe.ascent + fe.descent ) )
1571         {
1572             // some backends are broken re height ... (eg currently ATSUI)
1573             fe.height = fe.ascent + fe.descent;
1574         }
1575
1576         if (height)
1577             *height = fe.height;
1578         if ( descent )
1579             *descent = fe.descent;
1580         if ( externalLeading )
1581             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1582     }
1583 #endif
1584 }
1585
1586 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1587 {
1588     widths.Empty();
1589     widths.Add(0, text.length());
1590
1591     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1592
1593     if (text.empty())
1594         return;
1595
1596     // TODO
1597 }
1598
1599 void * wxCairoContext::GetNativeContext()
1600 {
1601     return m_context;
1602 }
1603
1604 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1605 {
1606     if (m_antialias == antialias)
1607         return true;
1608
1609     m_antialias = antialias;
1610
1611     cairo_antialias_t antialiasMode;
1612     switch (antialias)
1613     {
1614         case wxANTIALIAS_DEFAULT:
1615             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1616             break;
1617         case wxANTIALIAS_NONE:
1618             antialiasMode = CAIRO_ANTIALIAS_NONE;
1619             break;
1620         default:
1621             return false;
1622     }
1623     cairo_set_antialias(m_context, antialiasMode);
1624     return true;
1625 }
1626
1627 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1628 {
1629     if ( m_composition == op )
1630         return true;
1631
1632     m_composition = op;
1633     cairo_operator_t cop;
1634     switch (op)
1635     {
1636         case wxCOMPOSITION_CLEAR:
1637             cop = CAIRO_OPERATOR_CLEAR;
1638             break;
1639         case wxCOMPOSITION_SOURCE:
1640             cop = CAIRO_OPERATOR_SOURCE;
1641             break;
1642         case wxCOMPOSITION_OVER:
1643             cop = CAIRO_OPERATOR_OVER;
1644             break;
1645         case wxCOMPOSITION_IN:
1646             cop = CAIRO_OPERATOR_IN;
1647             break;
1648         case wxCOMPOSITION_OUT:
1649             cop = CAIRO_OPERATOR_OUT;
1650             break;
1651         case wxCOMPOSITION_ATOP:
1652             cop = CAIRO_OPERATOR_ATOP;
1653             break;
1654         case wxCOMPOSITION_DEST:
1655             cop = CAIRO_OPERATOR_DEST;
1656             break;
1657         case wxCOMPOSITION_DEST_OVER:
1658             cop = CAIRO_OPERATOR_DEST_OVER;
1659             break;
1660         case wxCOMPOSITION_DEST_IN:
1661             cop = CAIRO_OPERATOR_DEST_IN;
1662             break;
1663         case wxCOMPOSITION_DEST_OUT:
1664             cop = CAIRO_OPERATOR_DEST_OUT;
1665             break;
1666         case wxCOMPOSITION_DEST_ATOP:
1667             cop = CAIRO_OPERATOR_DEST_ATOP;
1668             break;
1669         case wxCOMPOSITION_XOR:
1670             cop = CAIRO_OPERATOR_XOR;
1671             break;
1672         case wxCOMPOSITION_ADD:
1673             cop = CAIRO_OPERATOR_ADD;
1674             break;
1675         default:
1676             return false;
1677     }
1678     cairo_set_operator(m_context, cop);
1679     return true;
1680 }
1681
1682 void wxCairoContext::BeginLayer(wxDouble opacity)
1683 {
1684     m_layerOpacities.push_back(opacity);
1685     cairo_push_group(m_context);
1686 }
1687
1688 void wxCairoContext::EndLayer()
1689 {
1690     float opacity = m_layerOpacities.back();
1691     m_layerOpacities.pop_back();
1692     cairo_pop_group_to_source(m_context);
1693     cairo_paint_with_alpha(m_context,opacity);
1694 }
1695
1696 //-----------------------------------------------------------------------------
1697 // wxCairoRenderer declaration
1698 //-----------------------------------------------------------------------------
1699
1700 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1701 {
1702 public :
1703     wxCairoRenderer() {}
1704
1705     virtual ~wxCairoRenderer() {}
1706
1707     // Context
1708
1709     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1710     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1711     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1712
1713     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1714
1715     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1716
1717     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1718
1719     virtual wxGraphicsContext * CreateMeasuringContext();
1720
1721     // Path
1722
1723     virtual wxGraphicsPath CreatePath();
1724
1725     // Matrix
1726
1727     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1728         wxDouble tx=0.0, wxDouble ty=0.0);
1729
1730
1731     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1732
1733     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1734
1735     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1736     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1737         const wxColour&c1, const wxColour&c2) ;
1738
1739     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1740     // with radius r and color cColor
1741     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1742         const wxColour &oColor, const wxColour &cColor) ;
1743
1744     // sets the font
1745     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1746
1747     // create a native bitmap representation
1748     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1749
1750     // create a graphics bitmap from a native bitmap
1751     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1752
1753     // create a subimage from a native image representation
1754     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1755
1756 private :
1757     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1758 } ;
1759
1760 //-----------------------------------------------------------------------------
1761 // wxCairoRenderer implementation
1762 //-----------------------------------------------------------------------------
1763
1764 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1765
1766 static wxCairoRenderer gs_cairoGraphicsRenderer;
1767 // temporary hack to allow creating a cairo context on any platform
1768 extern wxGraphicsRenderer* gCairoRenderer;
1769 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1770
1771 #ifdef __WXGTK__
1772 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1773 {
1774     return &gs_cairoGraphicsRenderer;
1775 }
1776 #endif
1777
1778 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1779 {
1780     return new wxCairoContext(this,dc);
1781 }
1782
1783 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1784 {
1785     return new wxCairoContext(this,dc);
1786 }
1787
1788 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1789 {
1790 #ifdef __WXGTK20__
1791     const wxDCImpl *impl = dc.GetImpl();
1792     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1793     if (context)
1794        return new wxCairoContext(this,dc);
1795     else
1796 #endif
1797        return NULL;
1798 }
1799
1800 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1801 {
1802 #ifdef __WXMSW__
1803     return new wxCairoContext(this,(HDC)context);
1804 #endif
1805 #ifdef __WXGTK__
1806     return new wxCairoContext(this,(cairo_t*)context);
1807 #endif
1808 }
1809
1810
1811 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1812 {
1813 #ifdef __WXGTK__
1814     return new wxCairoContext(this,(GdkDrawable*)window);
1815 #else
1816     return NULL;
1817 #endif
1818 }
1819
1820 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
1821 {
1822 #ifdef __WXGTK__
1823     return CreateContextFromNativeWindow(gdk_get_default_root_window());
1824 #endif
1825     return NULL;
1826     // TODO
1827 }
1828
1829 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1830 {
1831     return new wxCairoContext(this, window );
1832 }
1833
1834 // Path
1835
1836 wxGraphicsPath wxCairoRenderer::CreatePath()
1837 {
1838     wxGraphicsPath path;
1839     path.SetRefData( new wxCairoPathData(this) );
1840     return path;
1841 }
1842
1843
1844 // Matrix
1845
1846 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1847                                                 wxDouble tx, wxDouble ty)
1848
1849 {
1850     wxGraphicsMatrix m;
1851     wxCairoMatrixData* data = new wxCairoMatrixData( this );
1852     data->Set( a,b,c,d,tx,ty ) ;
1853     m.SetRefData(data);
1854     return m;
1855 }
1856
1857 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1858 {
1859     if ( !pen.Ok() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
1860         return wxNullGraphicsPen;
1861     else
1862     {
1863         wxGraphicsPen p;
1864         p.SetRefData(new wxCairoPenData( this, pen ));
1865         return p;
1866     }
1867 }
1868
1869 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1870 {
1871     if ( !brush.Ok() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
1872         return wxNullGraphicsBrush;
1873     else
1874     {
1875         wxGraphicsBrush p;
1876         p.SetRefData(new wxCairoBrushData( this, brush ));
1877         return p;
1878     }
1879 }
1880
1881 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1882 wxGraphicsBrush wxCairoRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1883                                                                       const wxColour&c1, const wxColour&c2)
1884 {
1885     wxGraphicsBrush p;
1886     wxCairoBrushData* d = new wxCairoBrushData( this );
1887     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1888     p.SetRefData(d);
1889     return p;
1890 }
1891
1892 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1893 // with radius r and color cColor
1894 wxGraphicsBrush wxCairoRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1895                                                                       const wxColour &oColor, const wxColour &cColor)
1896 {
1897     wxGraphicsBrush p;
1898     wxCairoBrushData* d = new wxCairoBrushData( this );
1899     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
1900     p.SetRefData(d);
1901     return p;
1902 }
1903
1904 // sets the font
1905 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1906 {
1907     if ( font.Ok() )
1908     {
1909         wxGraphicsFont p;
1910         p.SetRefData(new wxCairoFontData( this , font, col ));
1911         return p;
1912     }
1913     else
1914         return wxNullGraphicsFont;
1915 }
1916
1917 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
1918 {
1919     if ( bmp.Ok() )
1920     {
1921         wxGraphicsBitmap p;
1922         p.SetRefData(new wxCairoBitmapData( this , bmp ));
1923         return p;
1924     }
1925     else
1926         return wxNullGraphicsBitmap;
1927 }
1928
1929 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
1930 {
1931     if ( bitmap != NULL )
1932     {
1933         wxGraphicsBitmap p;
1934         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
1935         return p;
1936     }
1937     else
1938         return wxNullGraphicsBitmap;
1939 }
1940
1941 wxGraphicsBitmap
1942 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
1943                                  wxDouble WXUNUSED(x),
1944                                  wxDouble WXUNUSED(y),
1945                                  wxDouble WXUNUSED(w),
1946                                  wxDouble WXUNUSED(h))
1947 {
1948     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
1949     return wxNullGraphicsBitmap;
1950 }
1951
1952 #endif  // wxUSE_GRAPHICS_CONTEXT && wxUSE_CAIRO
1953
1954 #if wxUSE_GRAPHICS_CONTEXT
1955 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
1956 {
1957 #if wxUSE_CAIRO
1958     return &gs_cairoGraphicsRenderer;
1959 #else
1960     return NULL;
1961 #endif
1962 }
1963 #endif